diff options
Diffstat (limited to 'memory.h')
| -rw-r--r-- | memory.h | 134 |
1 files changed, 134 insertions, 0 deletions
@@ -122,6 +122,7 @@ struct MemoryRegion { IORange iorange; bool terminates; bool readable; + bool ram; bool readonly; /* For RAM regions */ bool enabled; MemoryRegion *alias; @@ -147,6 +148,45 @@ struct MemoryRegionPortio { #define PORTIO_END_OF_LIST() { } +typedef struct MemoryRegionSection MemoryRegionSection; + +/** + * MemoryRegionSection: describes a fragment of a #MemoryRegion + * + * @mr: the region, or %NULL if empty + * @address_space: the address space the region is mapped in + * @offset_within_region: the beginning of the section, relative to @mr's start + * @size: the size of the section; will not exceed @mr's boundaries + * @offset_within_address_space: the address of the first byte of the section + * relative to the region's address space + */ +struct MemoryRegionSection { + MemoryRegion *mr; + MemoryRegion *address_space; + target_phys_addr_t offset_within_region; + uint64_t size; + target_phys_addr_t offset_within_address_space; +}; + +typedef struct MemoryListener MemoryListener; + +/** + * MemoryListener: callbacks structure for updates to the physical memory map + * + * Allows a component to adjust to changes in the guest-visible memory map. + * Use with memory_listener_register() and memory_listener_unregister(). + */ +struct MemoryListener { + void (*region_add)(MemoryListener *listener, MemoryRegionSection *section); + void (*region_del)(MemoryListener *listener, MemoryRegionSection *section); + void (*log_start)(MemoryListener *listener, MemoryRegionSection *section); + void (*log_stop)(MemoryListener *listener, MemoryRegionSection *section); + void (*log_sync)(MemoryListener *listener, MemoryRegionSection *section); + void (*log_global_start)(MemoryListener *listener); + void (*log_global_stop)(MemoryListener *listener); + QLIST_ENTRY(MemoryListener) link; +}; + /** * memory_region_init: Initialize a memory region * @@ -267,6 +307,33 @@ void memory_region_destroy(MemoryRegion *mr); uint64_t memory_region_size(MemoryRegion *mr); /** + * memory_region_is_ram: check whether a memory region is random access + * + * Returns %true is a memory region is random access. + * + * @mr: the memory region being queried + */ +bool memory_region_is_ram(MemoryRegion *mr); + +/** + * memory_region_is_logging: return whether a memory region is logging writes + * + * Returns %true if the memory region is logging writes + * + * @mr: the memory region being queried + */ +bool memory_region_is_logging(MemoryRegion *mr); + +/** + * memory_region_is_rom: check whether a memory region is ROM + * + * Returns %true is a memory region is read-only memory. + * + * @mr: the memory region being queried + */ +bool memory_region_is_rom(MemoryRegion *mr); + +/** * memory_region_get_ram_ptr: Get a pointer into a RAM memory region. * * Returns a host pointer to a RAM memory region (created with @@ -491,6 +558,16 @@ void memory_region_add_subregion_overlap(MemoryRegion *mr, target_phys_addr_t offset, MemoryRegion *subregion, unsigned priority); + +/** + * memory_region_get_ram_addr: Get the ram address associated with a memory + * region + * + * DO NOT USE THIS FUCNTION. This is a temporary workaround while the Xen + * code is being reworked. + */ +ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr); + /** * memory_region_del_subregion: Remove a subregion. * @@ -541,6 +618,37 @@ void memory_region_set_alias_offset(MemoryRegion *mr, target_phys_addr_t offset); /** + * memory_region_find: locate a MemoryRegion in an address space + * + * Locates the first #MemoryRegion within an address space given by + * @address_space that overlaps the range given by @addr and @size. + * + * Returns a #MemoryRegionSection that describes a contiguous overlap. + * It will have the following characteristics: + * .@offset_within_address_space >= @addr + * .@offset_within_address_space + .@size <= @addr + @size + * .@size = 0 iff no overlap was found + * .@mr is non-%NULL iff an overlap was found + * + * @address_space: a top-level (i.e. parentless) region that contains + * the region to be found + * @addr: start of the area within @address_space to be searched + * @size: size of the area to be searched + */ +MemoryRegionSection memory_region_find(MemoryRegion *address_space, + target_phys_addr_t addr, uint64_t size); + + +/** + * memory_global_sync_dirty_bitmap: synchronize the dirty log for all memory + * + * Synchronizes the dirty page log for an entire address space. + * @address_space: a top-level (i.e. parentless) region that contains the + * memory being synchronized + */ +void memory_global_sync_dirty_bitmap(MemoryRegion *address_space); + +/** * memory_region_transaction_begin: Start a transaction. * * During a transaction, changes will be accumulated and made visible @@ -554,6 +662,32 @@ void memory_region_transaction_begin(void); */ void memory_region_transaction_commit(void); +/** + * memory_listener_register: register callbacks to be called when memory + * sections are mapped or unmapped into an address + * space + * + * @listener: an object containing the callbacks to be called + */ +void memory_listener_register(MemoryListener *listener); + +/** + * memory_listener_unregister: undo the effect of memory_listener_register() + * + * @listener: an object containing the callbacks to be removed + */ +void memory_listener_unregister(MemoryListener *listener); + +/** + * memory_global_dirty_log_start: begin dirty logging for all regions + */ +void memory_global_dirty_log_start(void); + +/** + * memory_global_dirty_log_stop: begin dirty logging for all regions + */ +void memory_global_dirty_log_stop(void); + void mtree_info(fprintf_function mon_printf, void *f); #endif |